Fred Guttenberg, the father of Jaime Guttenberg, one of the 17 killed last week in Parkland, FL, pressed Sen. Marco Rubio on the role of guns and assault weapons in the shooting during a CNN town hall event on Wednesday, Feb. 21. (Source: CNN)

Senator Marco Rubio faced a barrage of tough questioning related to gun control and the shooting at Marjory Stoneman Douglas High School in Florida at a CNN town hall event on Wednesday.